1. It must be fake. SSA is not a decision theorem. Imagine two triangles with equal sides but unequal angles, an acute angle and an obtuse angle. The included angle between the equal side of two triangles and the third side is equal. The third side of an acute triangle is long and the third side of an obtuse triangle is short. Draw a picture by yourself. )

2.(2) Yes, (1) The narrative angle is wrong (the subject should be two angles, so it should be the topic: What two angles? Conclusion: They are redundant).

3. The total holiday (1) is not parallel, far from the same angle, let alone equal. (2) Two equilateral triangles are similar. Because the length of three sides can be scaled arbitrarily.

4. Not necessarily congruent. Because one right angle side can be 3cm and the other hypotenuse side can be 3cm.

5. Not necessarily congruent. No corresponding equilateral is specified. For example, an isosceles triangle with a waist length of 3 and a base length of 1; The other has a waist length of 9 and a bottom length of 3.

6. Must be congruent. Because the title has clearly expressed the meaning of correspondence and equality.

7. 14. First of all, teachers who can teach two courses include teachers who can teach three courses. Therefore, students with 15-4= 1 1 can only teach mathematics and foreign languages; There are 10-4=6 students who can only teach math and Chinese; 8-4=4 students can only teach foreign languages and Chinese. Because when counting the whole, teachers who can teach two courses will count twice, and teachers who can teach three courses will count three times. So there are 50+45+40-11-6-4-4 * 2 =106 teachers. Yes120-106 =14 won't teach.